Why would the double-poring technique be a preferred method of fabricating a cast/studt models?

Prevent distortion

Explanation: Double-pouring technique is a technique used for casting is technique aimed at ensuring that there is no distortion of the fabricated or casted material.

Double pouring technique is a very effective process to ensure that the fabricated or casted material is tightly held up and the life span will be higher,this type of casting or fabrication is recommended for materials that requires a higher strength or are expected to be used during harsh conditions.